The name of this superfamily has been modified since the most recent official CATH+ release (v4_3_0). At the point of the last release, this superfamily was: waiting to be named.

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 1: CD109 isoform 3

Please note: GO annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

There are 36 GO terms relating to "molecular function"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Protease binding GO:0002020
Interacting selectively and non-covalently with any protease or peptidase.
2 P01023 (/IPI) Q7SIH1 (/IPI)
Endopeptidase inhibitor activity GO:0004866
Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
2 P06238 (/IDA) Q61838 (/IDA)
Protein binding GO:0005515
Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
2 P01023 (/IPI) Q6GQT1 (/IPI)
Peptidase inhibitor activity GO:0030414
Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
2 Q03626 (/TAS) Q6GQT1 (/TAS)
Brain-derived neurotrophic factor binding GO:0048403
Interacting selectively and non-covalently with brain-derived neurotrophic factor.
2 P06238 (/IDA) Q63041 (/IDA)
Brain-derived neurotrophic factor binding GO:0048403
Interacting selectively and non-covalently with brain-derived neurotrophic factor.
2 Q61838 (/ISO) Q6GQT1 (/ISO)
Nerve growth factor binding GO:0048406
Interacting selectively and non-covalently with nerve growth factor (NGF).
2 P06238 (/IDA) Q63041 (/IDA)
Nerve growth factor binding GO:0048406
Interacting selectively and non-covalently with nerve growth factor (NGF).
2 Q61838 (/ISO) Q6GQT1 (/ISO)
Transforming growth factor beta binding GO:0050431
Interacting selectively and non-covalently with TGF-beta, transforming growth factor beta, a multifunctional peptide that controls proliferation, differentiation and other functions in many cell types.
2 Q8R422 (/ISO) Q8R422 (/ISO)
Complement binding GO:0001848
Interacting selectively and non-covalently with any component or product of the complement cascade.
1 Q9DDV9 (/IDA)
Protease binding GO:0002020
Interacting selectively and non-covalently with any protease or peptidase.
1 Q6GQT1 (/ISO)
Antigen binding GO:0003823
Interacting selectively and non-covalently with an antigen, any substance which is capable of inducing a specific immune response and of reacting with the products of that response, the specific antibody or specifically sensitized T-lymphocytes, or both. Binding may counteract the biological activity of the antigen.
1 Q9DDV9 (/IDA)
Endopeptidase inhibitor activity GO:0004866
Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
1 Q6GQT1 (/ISO)
Endopeptidase inhibitor activity GO:0004866
Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
1 P20742 (/TAS)
Serine-type endopeptidase inhibitor activity GO:0004867
Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme.
1 P01023 (/IDA)
Serine-type endopeptidase inhibitor activity GO:0004867
Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme.
1 Q6GQT1 (/ISO)
Signaling receptor binding GO:0005102
Interacting selectively and non-covalently with one or more specific sites on a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.
1 P01023 (/IMP)
Signaling receptor binding GO:0005102
Interacting selectively and non-covalently with one or more specific sites on a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.
1 Q6GQT1 (/ISO)
Growth factor binding GO:0019838
Interacting selectively and non-covalently with any growth factor, proteins or polypeptides that stimulate a cell or organism to grow or proliferate.
1 P01023 (/IDA)
Growth factor binding GO:0019838
Interacting selectively and non-covalently with any growth factor, proteins or polypeptides that stimulate a cell or organism to grow or proliferate.
1 Q6GQT1 (/ISO)
Enzyme binding GO:0019899
Interacting selectively and non-covalently with any enzyme.
1 P01023 (/IPI)
Enzyme binding GO:0019899
Interacting selectively and non-covalently with any enzyme.
1 Q6GQT1 (/ISO)
Interleukin-8 binding GO:0019959
Interacting selectively and non-covalently with interleukin-8.
1 P01023 (/IPI)
Interleukin-8 binding GO:0019959
Interacting selectively and non-covalently with interleukin-8.
1 Q6GQT1 (/ISO)
Interleukin-1 binding GO:0019966
Interacting selectively and non-covalently with interleukin-1.
1 P01023 (/IDA)
Interleukin-1 binding GO:0019966
Interacting selectively and non-covalently with interleukin-1.
1 Q6GQT1 (/ISO)
Peptidase inhibitor activity GO:0030414
Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
1 A8K2U0 (/IDA)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
1 P06238 (/IDA)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
1 Q6GQT1 (/ISO)
Tumor necrosis factor binding GO:0043120
Interacting selectively and non-covalently with tumor necrosis factor, a proinflammatory cytokine produced by monocytes and macrophages.
1 P01023 (/IDA)
Tumor necrosis factor binding GO:0043120
Interacting selectively and non-covalently with tumor necrosis factor, a proinflammatory cytokine produced by monocytes and macrophages.
1 Q6GQT1 (/ISO)
Protein-containing complex binding GO:0044877
Interacting selectively and non-covalently with a macromolecular complex.
1 Q63041 (/IPI)
Protein-containing complex binding GO:0044877
Interacting selectively and non-covalently with a macromolecular complex.
1 Q61838 (/ISO)
Calcium-dependent protein binding GO:0048306
Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules), in the presence of calcium.
1 P01023 (/IPI)
Calcium-dependent protein binding GO:0048306
Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules), in the presence of calcium.
1 Q6GQT1 (/ISO)
Transforming growth factor beta binding GO:0050431
Interacting selectively and non-covalently with TGF-beta, transforming growth factor beta, a multifunctional peptide that controls proliferation, differentiation and other functions in many cell types.
1 Q6YHK3 (/IPI)

There are 39 GO terms relating to "biological process"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Liver development GO:0001889
The process whose specific outcome is the progression of the liver over time, from its formation to the mature structure. The liver is an exocrine gland which secretes bile and functions in metabolism of protein and carbohydrate and fat, synthesizes substances involved in the clotting of the blood, synthesizes vitamin A, detoxifies poisonous substances, stores glycogen, and breaks down worn-out erythrocytes.
5 A0A0R4IDD1 (/IMP) A0JMP8 (/IMP) A8KAZ5 (/IMP) B8QSI4 (/IMP) F6NTZ9 (/IMP)
Innate immune response GO:0045087
Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens.
3 Q9NFV7 (/IGI) Q9NFV8 (/IGI) Q9VLY7 (/IGI)
Negative regulation of protein phosphorylation GO:0001933
Any process that stops, prevents or reduces the rate of addition of phosphate groups to amino acids within a protein.
2 Q8R422 (/IMP) Q8R422 (/IMP)
Hair follicle development GO:0001942
The process whose specific outcome is the progression of the hair follicle over time, from its formation to the mature structure. A hair follicle is a tube-like opening in the epidermis where the hair shaft develops and into which the sebaceous glands open.
2 Q8R422 (/IMP) Q8R422 (/IMP)
Platelet degranulation GO:0002576
The regulated exocytosis of secretory granules containing preformed mediators such as histamine and serotonin by a platelet.
2 P01023 (/TAS) Q6YHK3 (/TAS)
Embryo implantation GO:0007566
Attachment of the blastocyst to the uterine lining.
2 P28665 (/IGI) Q61838 (/IGI)
Negative regulation of keratinocyte proliferation GO:0010839
Any process that decreases the rate, frequency or extent of keratinocyte proliferation. Keratinocyte proliferation is the multiplication or reproduction of keratinocytes, resulting in the expansion of a cell population.
2 Q8R422 (/IMP) Q8R422 (/IMP)
Negative regulation of transforming growth factor beta receptor signaling pathway GO:0030512
Any process that stops, prevents, or reduces the frequency, rate or extent of any TGF-beta receptor signaling pathway.
2 Q8R422 (/ISO) Q8R422 (/ISO)
Regulation of keratinocyte differentiation GO:0045616
Any process that modulates the frequency, rate or extent of keratinocyte differentiation.
2 Q8R422 (/IMP) Q8R422 (/IMP)
Negative regulation of wound healing GO:0061045
Any process that decreases the rate, frequency, or extent of the series of events that restore integrity to a damaged tissue, following an injury.
2 Q8R422 (/ISO) Q8R422 (/ISO)
Osteoclast fusion GO:0072675
The plasma membrane fusion process that results in fusion of mononuclear osteoclasts to form a multinuclear osteoclast.
2 Q8R422 (/IMP) Q8R422 (/IMP)
Defense response to other organism GO:0098542
Reactions triggered in response to the presence of another organism that act to protect the cell or organism from damage caused by that organism.
2 Q9NFV6 (/IMP) Q9VLY7 (/IMP)
Luteinization GO:0001553
The set of processes resulting in differentiation of theca and granulosa cells into luteal cells and in the formation of a corpus luteum after ovulation.
1 P06238 (/IEP)
Negative regulation of complement activation, lectin pathway GO:0001869
Any process that stops, prevents, or reduces the rate of complement activation by the lectin pathway.
1 P01023 (/IDA)
Negative regulation of complement activation, lectin pathway GO:0001869
Any process that stops, prevents, or reduces the rate of complement activation by the lectin pathway.
1 Q6GQT1 (/ISO)
Activation of membrane attack complex GO:0001905
The activation of the membrane attack complex components of the complement cascade which can result in death of a target cell through cytolysis.
1 Q9DDV9 (/IDA)
Acute inflammatory response to antigenic stimulus GO:0002438
An acute inflammatory response to an antigenic stimulus. An acute inflammatory response occurs within a matter of minutes or hours, and either resolves within a few days or becomes a chronic inflammatory response.
1 P06238 (/IEP)
Acute-phase response GO:0006953
An acute inflammatory response that involves non-antibody proteins whose concentrations in the plasma increase in response to infection or injury of homeothermic animals.
1 P06238 (/IEP)
Inflammatory response GO:0006954
The immediate defensive reaction (by vertebrate tissue) to infection or injury caused by chemical or physical agents. The process is characterized by local vasodilation, extravasation of plasma into intercellular spaces and accumulation of white blood cells and macrophages.
1 Q03626 (/IEP)
Female pregnancy GO:0007565
The set of physiological processes that allow an embryo or foetus to develop within the body of a female animal. It covers the time from fertilization of a female ovum by a male spermatozoon until birth.
1 P20742 (/TAS)
Response to nutrient GO:0007584
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a nutrient stimulus.
1 P06238 (/IEP)
Blood coagulation, intrinsic pathway GO:0007597
A protein activation cascade that contributes to blood coagulation and consists of the interactions among high molecular weight kininogen, prekallikrein, and factor XII that lead to the activation of clotting factor X.
1 P01023 (/TAS)
Response to wounding GO:0009611
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to the organism.
1 P06238 (/TAS)
Response to carbon dioxide GO:0010037
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a carbon dioxide (CO2) stimulus.
1 P06238 (/IEP)
Negative regulation of endopeptidase activity GO:0010951
Any process that decreases the frequency, rate or extent of endopeptidase activity, the endohydrolysis of peptide bonds within proteins.
1 P06238 (/IDA)
Extracellular matrix disassembly GO:0022617
A process that results in the breakdown of the extracellular matrix.
1 P01023 (/TAS)
Negative regulation of transforming growth factor beta receptor signaling pathway GO:0030512
Any process that stops, prevents, or reduces the frequency, rate or extent of any TGF-beta receptor signaling pathway.
1 Q6YHK3 (/IDA)
Response to prostaglandin E GO:0034695
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a prostagladin E stimulus.
1 P06238 (/IEP)
Defense response to bacterium GO:0042742
Reactions triggered in response to the presence of a bacterium that act to protect the cell or organism.
1 Q9DDV9 (/IDA)
Chordate embryonic development GO:0043009
The process whose specific outcome is the progression of the embryo over time, from zygote formation through a stage including a notochord and neural tube until birth or egg hatching.
1 Q7SXK0 (/IMP)
Stem cell differentiation GO:0048863
The process in which a relatively unspecialized cell acquires specialized features of a stem cell. A stem cell is a cell that retains the ability to divide and proliferate throughout life to provide progenitor cells that can differentiate into specialized cells.
1 Q6GQT1 (/IDA)
Defense response to Gram-negative bacterium GO:0050829
Reactions triggered in response to the presence of a Gram-negative bacterium that act to protect the cell or organism.
1 Q9NFV7 (/IMP)
Defense response to Gram-positive bacterium GO:0050830
Reactions triggered in response to the presence of a Gram-positive bacterium that act to protect the cell or organism.
1 Q9VLY7 (/IMP)
Regulation of small GTPase mediated signal transduction GO:0051056
Any process that modulates the frequency, rate or extent of small GTPase mediated signal transduction.
1 P01023 (/TAS)
Protein homotetramerization GO:0051289
The formation of a protein homotetramer, a macromolecular structure consisting of four noncovalently associated identical subunits.
1 P06238 (/IDA)
Response to glucocorticoid GO:0051384
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a glucocorticoid stimulus. Glucocorticoids are hormonal C21 corticosteroids synthesized from cholesterol with the ability to bind with the cortisol receptor and trigger similar effects. Glucocorticoids act primarily on carbohydrate and protein metabolism, and have anti-inflammatory effects.
1 P06238 (/IEP)
Regulation of endopeptidase activity GO:0052548
Any process that modulates the frequency, rate or extent of endopeptidase activity, the endohydrolysis of peptide bonds within proteins.
1 A8K2U0 (/IDA)
Negative regulation of wound healing GO:0061045
Any process that decreases the rate, frequency, or extent of the series of events that restore integrity to a damaged tissue, following an injury.
1 Q6YHK3 (/IDA)
Embryonic liver development GO:1990402
The process occurring during the embryonic phase whose specific outcome is the progression of the liver over time, from its formation to the mature structure.
1 P06238 (/IEP)

There are 13 GO terms relating to "cellular component"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Extracellular region GO:0005576
The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
3 P01023 (/TAS) Q61838 (/TAS) Q6YHK3 (/TAS)
Extracellular space GO:0005615
That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
3 A8K2U0 (/IDA) P06238 (/IDA) Q9NFV7 (/IDA)
Extracellular exosome GO:0070062
A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
3 A8K2U0 (/HDA) P01023 (/HDA) P20742 (/HDA)
Extracellular region GO:0005576
The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
2 P01023 (/NAS) P20742 (/NAS)
Extracellular space GO:0005615
That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
2 Q8R422 (/HDA) Q8R422 (/HDA)
Collagen-containing extracellular matrix GO:0062023
An extracellular matrix consisting mainly of proteins (especially collagen) and glycosaminoglycans (mostly as proteoglycans) that provides not only essential physical scaffolding for the cellular constituents but can also initiate crucial biochemical and biomechanical cues required for tissue morphogenesis, differentiation and homeostasis. The components are secreted by cells in the vicinity and form a sheet underlying or overlying cells such as endothelial and epithelial cells.
2 P01023 (/HDA) Q61838 (/HDA)
Blood microparticle GO:0072562
A phospholipid microvesicle that is derived from any of several cell types, such as platelets, blood cells, endothelial cells, or others, and contains membrane receptors as well as other proteins characteristic of the parental cell. Microparticles are heterogeneous in size, and are characterized as microvesicles free of nucleic acids.
2 P01023 (/HDA) P20742 (/HDA)
Extracellular space GO:0005615
That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
1 Q6GQT1 (/ISO)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
1 P01023 (/TAS)
Plasma membrane GO:0005886
The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
1 Q6YHK3 (/TAS)
Cell surface GO:0009986
The external part of the cell wall and/or plasma membrane.
1 Q6YHK3 (/HDA)
Platelet alpha granule membrane GO:0031092
The lipid bilayer surrounding the platelet alpha granule.
1 Q6YHK3 (/TAS)
Platelet alpha granule lumen GO:0031093
The volume enclosed by the membrane of the platelet alpha granule.
1 P01023 (/TAS)
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